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849S625 Datasheet دیتاشیت PDF دانلود

دیتاشیت - IDT - Crystal-to-LVPECL/LVDS Clock Synthesizer

شماره قطعه 849S625
شرح مفصل Crystal-to-LVPECL/LVDS Clock Synthesizer
تولید کننده IDT 
آرم IDT 


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849S625 شرح
Crystal-to-LVPECL/LVDS
Clock Synthesizer
849S625
Data Sheet
General Description
Features
The 849S625 is a high frequency clock generator. The 849S625
uses an external 25MHz crystal to synthesize 625MHz, 312.5MHz,
156.25MHz and 125MHz clocks. The 849S625 has excellent
cycle-to-cycle and RMS phase jitter performance.
The 849S625 operates at full 3.3V supply mode and is available in a
fully RoHS compliant 48-lead TQFP, E-Pad package.
Frequency Table for Bank A, B and C Outputs
Ten selectable differential LVPECL or LVDS outputs
Output frequencies of 625MHz, 312.5MHz, 156.25MHz or
125MHz using a 25MHz crystal.
Crystal interface designed for a 25MHz, parallel resonant crystal
Cycle-to-cycle jitter: 25ps (maximum)
RMS phase jitter at 156.25MHz (1MHz - 20MHz):
0.375ps (typical), LVDS outputs
Output duty cycle: 53% (maximum)
Full 3.3V supply mode
-40°C to 85°C ambient operating temperature
Available in lead-free (RoHS 6) packaging
Crystal Frequency (MHz) M Feedback Divider VCO Frequency (MHz) Nx Output Divider
Output Frequency (MHz)
25
25 625
1
625
25
25 625
2
312.5
25
25 625
4
156.25
25
25 625
5
125
Pin Assignment
XTAL_IN
XTAL_OUT
VEE
SELC0
SELC1
OEA
VCC
OEB
OEC
SELB0
SELB1
VEE
48 47 46 45 44 43 42 41 40 39 38 37
1 36
2 35
3 34
4 33
5 ICS849S625I 32
6 31
7 30
8 29
9 28
10 27
11 26
12 25
13 14 15 16 17 18 19 20 21 22 23 24
QA1
nQA1
QA2
nQA2
VCCO
VEE
QA3
nQA3
QA4
nQA4
QA5
nQA5
48 Lead TQFP, E-Pad
7mm x 7mm x 1.0mm package body
Y Package
Top View
©2015 Integrated Device Technology, Inc
1
December 2, 2015

قانون اساسیصفحه 24
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